Are you recording 4K video on your smartphone? Here's why you should: 4K video downscales to super sharp 1080p video, you can zoom and crop without any loss of quality, and you can print high quality still pictures from any frame of the video. We explain the basics and requirements to get started with 4K recording.

It's been 8 months since we last sprung a surprise network test on the three telcos. And now, armed with three Samsung Galaxy Note 3 smartphones and a 4G SIM card from each telco, we went to six shopping malls in Orchard to review the 4G coverage, and see if anything's changed.